Welcome to our shop 1. High-Quality Materials: Made of high-quality brass shaft and ABS material, the shower door roller is rustproof, sturdy, and durable, ensuring a long service life. 2. Package Includes: Each package contains 4 top shower door rollers and 4 bottom shower door rollers, providing all the necessary components for installation. 3. Dimensions: The rollers have a diameter of 23mm and a length of 6mm. They are suitable for sliding door glass with a thickness ranging from 3mm to 6mm, with a minimum hole size in the glass of 11mm. 4. Easy Installation: The bathroom slider is easy to move and install, saving space and enhancing the visual appeal of the door. 5. Compatibility Note: Suitable for glass shower doors with a distance of 18mm between the center of the hole and the edge of the glass. Please note that individual products may slightly differ from the images due to manual measurement and display differences. 100% Satisfaction: Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactory after-sales service.